PDA

View Full Version : oil & gas mix

mel jordan
10-22-2007, 09:55 PM
Hello I just bought a 1989 mercury 15 HP outboard & I would like to know the proper oil type & mix ratio.

Thanks
cbsr
10-22-2007, 10:02 PM
Mercury Recommends 50:1 Ratio After break in. It never hurts to mix it a bit richer. Recommend to use TCW-3 Type Outboard Oil.
Frosty
10-23-2007, 07:44 AM
Most engines today run 100:1 if your 50:1 then run 50:1 mixing richer will do nothing but oil plugs. If it was better to run richer Mercury would say so.

Yamaha perfected 100:1 oil ratio in 1984.
dd24skater
10-29-2007, 01:15 PM
Mercury Recommends 50:1 Ratio After break in. It never hurts to mix it a bit richer. Recommend to use TCW-3 Type Outboard Oil.


My High Perf Merc ran at 32:1
50:1 will be fine for that 15 hp

Dd

View Full Version : oil & gas mix